PRE-STRESSED FRAME MADE OF DOUBLE-T BEAMS WITH VARIABLE RIGIDITY WITH FLEXIBLE WALL

摘要

A pre-stressed metal frame made of elements with double-T cross section with flexible wall comprises two props and a girth rail with rigid mounting flange joints and hinged rest on the basements. By the columns of the frame tie made of round steel or steel cable is provided, force of tension of the tie provides bending moment opposite to that occurring under effect of calculated loads on frame, due to that consumption of metal for production of metal frames is decreased with increase of bearing ability of those.